Code Playground
Write and run JavaScript, TypeScript, Python, or Java. JS/TS run in-browser; Python runs via Wandbox API; Java shows local run instructions.
Templates
Hello World
Tips
- • JS/TS: run instantly in-browser via
console.log()— no server needed - • Python: runs via Wandbox API (free, no key) — requires internet, may take 2–5 seconds
- • Java: no free cloud compiler available — click Run for local run instructions (
javac) - • For Java: wrap your code in a
public class Mainwith amainmethod - • Scripts time out after 5 seconds to prevent infinite loops
- • TypeScript type annotations are stripped before in-browser execution